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(N0 Model.

, J.H.BULLARD. HYDROGARBON BURNING APPARATUS.

No. 483,100. Patented Sept. 20, 1892.

UNITED STATES PATENT OFFICE,

JAMES H. BULLARD, OF SPRINGFIELD, MASSACHUSETTS, ASSIGNOR TO THE AERATEDFUEL COMPANY, OF SAME PLACE.

HYDROCARBON-BURNING APPARATUS.

SPECIFICATION forming part of Z'lletters Patent No. 483,100, datedSeptember 20, 1892. Application filed December 26, 1891I Serial No.416,256. (No model- To all whom it may concern.-

Be it known that I, JAMES H. BULLARD, a citizen of the UnitedStates,residing at Springfield, in the county'of Hampden and State ofMassachusetts, have invented new and useful Improvements inHydrocarbon-Burning Ap- 1paratus, of which the following is aspecificaion.

This invention for improvements in hydrocarbon-burning apparatus isparticularly designed to secure in a peculiarly arranged and constitutedhydrocarbon-burning plant the automatic delivery of the oil to theburner or burners in conjunction with and only during the time of thedelivery of a sufficient quantity of air, also, to the burner orburners.

The invention consists, in a hydrocarbonburning apparatus, in thecombination, with an injector-burner and an oil-tank, of an oilpumphaving a driving-shaft and having its induction-pipe leading from theoil-tank and its eduction-pipe leading to and serving the burner, apower-driven shaft, and shiftable driving connections between same andthe oilpump shaft, an air-compressor, and a conduit leading therefrom tothe burner, and a chamber having air communication with theaircompressor, one Wall of such chamber being constituted by a movablediaphragm, which has an engagement with the aforesaid shiftable drivingconnection,substantially as will appear more fully hereinafter.

In the drawings the invention is illustrated by showing embodimentsthereof which differ somewhat structurally, but which are to all intentsand purposes substantially the same, as the invention is comprehended inand by the foregoing statement of the nature and composition thereof.

Figure 1 is an elevation of the apparatus with parts in section; andFig.2 is a sectional elevation of a part of the apparatus, showing themodified construction.

A represents an injector-burner of a wellknown type, the same beingunderstood as having oil and air passages therethrough, and B indicatesan air-compressor, the same being indicated as driven by belt and pulleyat a from an overhead shaft 0, which is understood to be driven by anysuitable motive power. An air-pipe 6 leads from the air-compressor forconveying air to the oil-burner A.

D indicates an oil-pump, of which at is the driving-shaft, havingthereon the fixed and loose pulleys f f, and 9 represents a wide fixedpulley on the power-driven shaft C, h representing the belt, which isaround the fixed pulley of the shaft 0 and adapted to be around eitherthe fixed or the loose pulleys of the pump-shaft.

F represents an oil-supply tank, leading from which to theinduction-passage into the pump is the pipe 1', whilej represents a pipeleading from the eduction-passage of the pump to a connection with theburner for the oil-supply thereof.

m represents a belt-shifter in engagement with the belt h, and adjacentto the said beltshifter is an air-chamber at, one wall of which isconstituted by a movable diaphragm 0, a spindle 19 extending from aconnection with the diaphragm to an engagement With the lever m, whichconstitutes a part of the beltshifter. The said lever m is shown aspivot ally mounted at its elbow, the horizontallyweighted arm exertingtendency to swing the belt-shifter so as to carry the belt h onto theloose pulley f.

q indicates a pipe, which by being connected with the aforesaid pipe I)has a communication with the air-compressor, the said pipe q alsoleading to a communication with the said air-chamber.

Now it will be apparent from the description of the foregoingcontrivances, arranged as described, that so long as there is a runningof the air-compressor, and a consequent supply thereby of air to theburner, as is necessary in conjunction with the feed of oil also to theburner for the effective combustion of the latter, there will be anestablishment of airpressure within the said chamber at, andconsequently such a forcing of the diaphragm as will effect themaintenance of the belt-shifter in such a position as will insure thespeeding 5 of the belt, and the consequent running of the oil-pump forsupplying the burner. It will be also apparent that if for any reason,accidental or otherwise, the air-pressure in the requisite degree fails,whereby there would :00

not be delivered at the burner such quantities of air as required forthe proper combustion of the also delivered oil thereat, the weightedlever-arm of the belt-shifter will then be permitted to swing to carrythe belt onto the loose pulley, as is manifestly permitted to be done,owing to the lack of pressure in the chamber n. While in the said Fig. 1and in the description above given in connection therewith a certainkind of shiftable medium of connection is shown as intervenin g betweenthe movable diaphragm and the driving-shaft of the oil-pump, comprisingthe pulley on the driven shaft 0, the diaphragmoperated belt-shifter,and the belt h in Fig. 2, there is illustrated in lieu of the fixedpulleys g on the shaft 0 a loosely-mounted pulley 9 which is understoodas having belt connection with the pulley of the pump, and a slidingsleeve 25, which is operated by the movements of the diaphragm throughthe connection shown,and which will be plainly understood, the saidsliding sleeve operating the members of a common form offriction-clutch. In the latter-described,contrivance the pulley runsloose and the oil-pump remains inactive at such time as there is notsuch a pressure of air in the diaphragm-sided chamber as to force themovable part of the friction-clutch into clutching engagement with thesaid pulley 9 Other forms of friction-clutches might be substituted forthe form of clutch above briefly described, and the movable connectionsintervening between the power-dr1ven shaft 0 and the driving-shaft ofthe oil-pump, which are operated by the movements of the air-presseddiaphragm, may be, as have already devised them, somewhat differentlyarranged and constituted from elther of the structures in thecorresponding situation,

which have been already described.

Having thus described my invention, what I claim, and desire to secureby Letters Patent, is p In a hydrocarbon-burning apparatus, 1ncombination, an injector-burner, an oil-tank, an oil-pump having adriving-shaft and having its induction-pipe leading from the 011- tankand its eduction-pipe leading to and serving the burner, a power-drivenshaft and shiftable driving connections between same and the oil-pumpshaft, an air-compressor and a conduit leading therefrom to the burner,and a chamber having air communication with the compressor, one wall ofsaid chamber being constituted by a movable diaphragm, which has anengagement with the aforesaid shift-able connections, for the purposeset forth.

JAMES H. BULLARD. Witnesses:

v H. A. CEAPIN,

WM. S. BELLOWS.

